Elevator-door-locking mechanism.



No. 687,049. Patentgd Nov. l9, l90l. J. s. mucKLE. ELEVATOR DOOR LOCKING MECHANISM.

(Application filed Jan. 29, 1900.) (No Model) a Sheets-Sheet 1.,

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No. 687,049. Patented Nov. l9, IQOI.

J. S. MUCKLE. ELEVATOR DOOR LOCKING MECHANISM.

(Application filed-.J'a p. 20, 1900.) v

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Patented Nov. 19, l90l. J. S. MUCKLE. 5

ELEVATOR DOOR LOCKING MECHANISM.

(Application filed. Jan. 20, 1900.)

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UNITED STATES PATENT OFFICE.

SELF, M. R. MUOKLE-JE, .DELPHIA, PENNSYLVANIA.

AND THOMAS CARPENTER SMITH, OF PHILA- ELEVAJTOR-DOOR-LOCKING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 687,049, dated November 19, 1901.

Application filed January 20, 1900. fierial No. 2 132. (No model.)

To all whom it may concern:

Be it known that I, JOHN S. MUOKLE, a'citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in, Elevator-Door-Locking Mechanism, of which the following is a specification.

My invention relates to certain improvements in elevator mechanism in which the [0 doors are operated by pneumatic devices.

The object of my invention is to control these devices by the operating hand wheel or lever for starting or stopping the car.

In the accompanying drawings, Figure 1 is a view of an elevator-car at a landing, showing the car in section and the doors open.

Fig. 2 is a section on'the line 2 2, Fig. 1. Fig. 3 is an enlarged sectional view on the line 3 3, Fig. 4, showing the connection between the car-controlling device and the door-operating mechanism. Fig. 4 is a side view, partly in section, of the device shown in Fig. 3.

By my invention the car-controlling mechanism must be brought to a certain point to stop the car before the doors are opened, and thismechanism cannot be again operated to start the car without first closing the doors. A is the car, in the present instance of a passenger-elevator. 0 B is the fioor of a landing.

D D are the landing-doors, being of the sliding type in the present instance, adapted to guides at d above the doorway.

E is an air-cylinder having a controllingvalve e, connected to the cylinder by pipes.

e e are the air-service pipes. The pistonrod of the cylinder is connected to a slide E, adapted toa way 6 The slide E is connected by a rod F to a pivoted arm F, attached to 0 the rear of one of the doors, and the arm in turn is connected to a pivoted arm F by a a rod F and attached to the opposite door, so that when the piston is forced forward the action of the mechanism is to close the doors.

The controlling-valve e of the cylinder E is connected by a rod'g to a lever G, which projects so as to be engaged by a bar H, pivoted to levers h, hung at h to a projection H on the car. The other arms of the levers h h are connected to a bar k to which is attached a chain 'i, connected to a lever I, pivoted to a bearing 4." under the bottom of the car. i

The arm of this lever is connected by a rod I, Fig. 3, to a pivot-pin icon an elliptical U gear-wheel K, hung at it to a frame J, secured to the side of the elevator-car. The gearwheel K meshes with the elliptical gear-wheel K, secured to a shaft L, adapted to bearings j the car, and each" end isattached to a carrier p, on which are the rope-wheels 19 The controlling-rope S passes around the guidepulleys 8, under the car, and around the pulleys 19 as shown, so. that as the hand-wheel N is turned the carriers 1) will be moved toward or from the wheels 3, and consequently will shift the rope, Whichis connected to the controlling-valve or other controlling mechanism of the elevator, and will either start or stop the car, according to the position of the wheel. The gearing for controlling the mechanism for opening the doors is so set that after the hand-wheel is turned so as toshift the valves and stop the elevator-car at the landing by a continued movement of the hand: Wheel the lever I will be moved so as to force the bar H out, and as the lever G is in the path of this bar when the car is at the landing it will also be moved, and this motion will be imparted to the valve 6, which will allow air to be admitted to the cylinder, drawing the piston in and causing the doors to open through the connections F F F F. When it is Wished to close the doors prior to starting the elevator, the first movement of the hand-lever will retract the bar H, releasing the lever G and shifting the valve e, causing the air to enter the other end of the cylinder E, and the doors will immediately close. Then by a continued movement of the hand-wheel the controlling-lever of the car will be operated and the car can either ascend or descend, as desired.

The general mechanism for opening and closing the door is not my invention, and I lay no claim to it; but I do claim the connection between this mechanism and the controller for the car, so as to dispense with any hand or foot levers usually employed in dooropeners of this type to shift the valve. Furthermore,this combination prevents the opening of the door until the elevator is in the proper position at the landing, and it prevents the starting of the car until the doors are closed.

I claim as my invention- The combination of a car, a landing, doors at the landing, means for automatically closing and opening said doors, means on the car adapted to engage the doors when opposite the landing, a hand-wheel on the car controlling the movement of the elevator, a connection between the hand-wheel and the dooroperating device, the same consisting of eccentric gears, and a connecting-rod whereby the doors can be opened when the elevator is at the landing by continuing the movement of the wheel and can be closed prior to starting the car on the first return movement of the wheel, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN s. MUOKLE.

Witnesses:

WILL. A. BARR, J os. H. KLEIN. 

